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jj604

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jj604 28/11/2019

If you have an analog voltage input on a flight controller or telemetry receiver this is a very neat current sensor that adds virtually no weight since it also the ESC power connector. For example with an FrSky receiver that has an A1 or A2 analog input you can display the current as an equivalent voltage. 50Amps actual current = 5.00V on the display when using a scaling factor of 20.5 on my D8R Plus receiver. It is a simple device using just a 0.5mOhm sense resistor and an op amp to amplify the voltage.At high currents it has a bit of thermal drift because it gets warm but it is surprisingly linear up to 80 Amps and the offset is only about 1 Amp. The first picture shows the actual output voltage vs. current tested on an accurate constant current variable load. The second shows the Taranis A2 telemetry display value vs. current when the scale factor was 20.5 and the offset set to -0.63 on my X9D Plus transmitter. In practice it's a simple way to monitor the current as you just multiply the display voltage by 10x mentally. Not quite as straightforward as a true FrSky telemetry current sensor, and you cannot use the calculated consumption function - but it's a lot lighter and cheaper.

Sensore di corrente FullSpeed FSD AMASS XT60 Misuratore di corrente 2-6S 80A per RC Drone FPV Racing Multi Rotor

US$12.69 US$13.99

7

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jj604 31/07/2019

This is neither a 50mAh cell nor a high rate cell suitable as a LiPo flight pack for most indoor planes (despite the convenient connector). It arrives very well protected in an individual plastic box and the assembly is good quality, but the test results are disappointing. This is a 42mAh cell at best and ONLY if you keep the discharge below 100mA. It will be fine for very small low load applications like the Plantraco Carbon Butterfly or the TY Model Indoor Airplane Hummingbird Ultra Light. Anything much over that and it will not performs well. At a 200mA discharge which is only a 4 C rate, this cell falls to 3.3V at mid discharge. At 100mA discharge it does fine and hold s 3.6V at mid discharge.

Batteria LiPo Mini da 3,7V 50mAh 1S con connettore Molex 2P da 1,25mm, dimensioni 10mm e peso 1,55g. Compatibile con l'aereo RC Tygzs M1 KFPLAN KF606 Vapor

US$10.38 US$10.79

5

Commento (1)

Scheda di caricamento parallelo 2 IN 1 PG XT30 XT60 Plug Supporta 4 pacchi batteria 2-8S Lipo

US$16.16 US$16.99

D: How can this board do 2-8S? It only has 7 balance wire connections for up to a 6S pack?

Domandata da jj604 il 2018-08-06 07:18:26

yudhieldin itonly provides 6 cells. an explanation error occurred

2021-01-19 07:03:56 Utile

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jj604 02/11/2021

Conclusions: 1) The labelling at 600mAh is JUST acceptable. These cells do deliver 600mAh to a 3V cutoff at a very small 100mA load. The red line. This is about as generous a test as you can do but they do just scrape in. 2) In practical terms they are really a 500mAh cell. At a 1.5Amp load which is a 2.5C rate for a nominal 600mAh cell they have dropped to 3.35V at the 500mAh discharge point. The blue line. 3) They are fairly described as a 5C rate cell, not 25C as on the label. The green line. At 3 Amp continuous discharge they have dropped to 3.5V at 200mAh discharge and barely 3.2V at 500mAh discharge. Allowing for some small voltage drop in the test leads I would be prepared to call these cells 5C - that is 3Amp maximum discharge.

Eachine QX95 QX90 E30 E30W Syma X5-15 X5C H5C da 1 a 4 3.7V 600MAH Batteria Aggiornamento

US$25.40 US$26.99

6

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jj604 01/12/2021

Great little vehicle. Lots of fun and fast. The kid loves it. At the discount price of less than US$ it was an absolute bargain. Very quick delivery as well. 10 days from ordering to the door in Australia.

Eachine EC07 Auto RC 2.4G 4CH Acrobazie Drift Deformazione Telecomando Rock Crawler Capriole Giocattolo Robot Auto per Bambini

US$12.99 US$35.99

0

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jj604 23/11/2021

Good value. The XT connectors are clones, not original AMASS, but this does not matter in this application.

Scheda di ricarica parallela XT30 1S-3S per caricatore con spina IMAX B6 ISDT XT60

US$15.00 US$15.99

0

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jj604 01/07/2021

This is a neat little LED switch. It has a JST-XH connector on the end to plug directly to a 3S LiPo balance lead for power. You could have a separate battery or just use your main 3S LiPo since its balance lead is along for the ride and doing nothing. The switch controls 3 separate outputs for 12V LED lights. The full 3S voltage is supplied to the LEDs so your LiPo does not get out of balance. One of the servo leads goes to a channel with a 2 position switch and turns the LEDS on and off. The second goes to a channel with a 3 position switch and selects the 3 different light modes: constant on, all 3 flashing, each flashing in turn. The picture shows which lead is which - they are not marked. Switching occurs off/on at 1800uS and modes are Constant <1100uS, Flashing 1100-1800uS, Sequential >1800uS. If you have only one free receiver channel you can connect both servo leads together but you will only get off and sequential flashing. The output control FETS are Si2302DS which are rated at 20V and 2.5A but only 1.25W. Because they are 3 independent circuits you can use 1, 2 or 3 LEDs as suits. Three 12V, 10Watt LEDs seemed to be fine when flashing. 12V, 10W LEDs are well within both the voltage and current ratings but not the power rating. I suspect the whole thing will die if you kept them on continuously, but flashing is fine. The unit is nicely built as well.

Cavo di controllo luce LED 11.1V 3S per modelli RC

US$11.54 US$11.99

0

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jj604 20/06/2021

Excellent quality precision machined gimbals with adjustable travel limits 38-54°. Was not worth the money for me as the standard gimbals are extremely good and for general fixed wing flying there is no significant difference. For quads and precision flying would be an improvement I think.

Asse di montaggio in metallo con corsa regolabile per il controllo remoto del FlySky FS-HZCZ03-ADJ e NV14

US$116.64 US$121.99

0

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Cavo di controllo luce LED 11.1V 3S per modelli RC

US$11.54 US$11.99

D: No - not the voltage rating, the current rating. Thanks

Domandata da jj604 il 2021-06-16 08:22:21

Jarppi01 Only the parameters of the rated voltage

2021-06-17 05:36:52 Utile (1)

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Modulatore di luce controller LED in miniatura colorato da 5-24V per modelli RC

US$8.07 US$8.39

D: What is the total current rating for this switch?

Domandata da jj604 il 2021-06-16 12:49:41

2021-06-16 10:29:36 Utile (1)

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Cavo di controllo luce LED 11.1V 3S per modelli RC

US$11.54 US$11.99

D: What is the current rating of the switch.

Domandata da jj604 il 2021-06-16 12:38:54

The seller 11.1V

2021-06-16 03:55:41 Utile

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jj604 16/03/2021

Excellent display. Works well.

Orologio sveglia a specchio LED, display grande con visualizzazione di temperatura e umidità, funzione radio e proiezione dell'ora, orologio elettronico ricaricabile

US$25.99 US$37.99

0

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MELROSE S10 1,0 Pollici 450mAh Bluetooth Piccolissimo Telefono Musica MP3 Antiurto

US$29.01 US$27.83

D: Are there any instructions in English anywhere?

Domandata da jj604 il 2018-03-13 09:44:22

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