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hAKi Seriously?Need instructions for this camera?

superturbo 25/01/2018
Got the camera. It looks good and has a lot of mounts but mine didn't come with instructions or any link to a site to download instructions from. So deducting one star from value and two from quality because I can't safely use it without any instructions.
G2 Ultra HD 4K WI-FI Azione fotografica 2 Inch LCD Sport DV 170 gradi grandangolare lente
US$49.10 US$73.99
0
Commento (3)
hAKi 16/12/2021
I'm a little disappointed. Signs for units are decidedly too small! Temperature measurement is inaccurate. At -18 degrees Celsius the instrument shows +5 degrees, at 0 degrees it shows +6 degrees, at +6 degrees it shows +14 degrees and at 98 degrees it shows 103 degrees. True RMS is a story in itself. With open terminals it shows some completely random values and even with closed ones it does not show 0. It works satisfactorily only for sinusoidal signals, with rectangular ones the error is already around 20% at 50Hz! Useless. Interestingly, I didn’t notice this nonsense when measuring the current.
ANENG AN870 Multimetro Digitale di Precisione con Auto Range 19999 Conteggi True-RMS NCV Ohmmetro Tester
US$33.99 US$58.99
0
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hAKi 23/04/2020
Excellent product, works as expected, I already order another one. The internal 25MHz reference is not very precise and stable, I recommended to use an external 10MHz reference to get a very precise frequency. But altogether, I am very pleased with product!
Sorgente di segnale RF PLL sintetizzatore di frequenza ADF4351, scheda di sviluppo 35M-4.4GHz
US$22.99 US$35.99
1
raccomandazioni
Commento (0)
hAKi 08/05/2020
Great thing, I ordered another one to also make a RF generator for a friend. In the first case, the internal reference deviated a little, but in the latter case it did not. Since the temperature stability of the oscillator is satisfactory, there is a simple solution. The oscillator frequency is measured and this value is entered into the SW. The CE pin must be HIGH for proper operation. We can connect it to 3.3V, but it is better to select a free pin on the processor, set it to HIGH and connect it to CE. I use ESP32 myself and I connected the CE pin to EN on the processor. For low phase noise, the power supply to the ADF4351 module must be separate from the processor power supply.
Sorgente di segnale RF PLL sintetizzatore di frequenza ADF4351, scheda di sviluppo 35M-4.4GHz
US$22.99 US$35.99
5
raccomandazioni
Commento (0)
hAKi 13/05/2021
Nice!
5PCS XANES® EDC Coltello pieghevole 160mm 3Cr13 Lama affilata in acciaio inossidabile Sopravvivenza all'aperto campeggio Coltello pieghevole
US$19.62 US$40.99
0
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hAKi 11/05/2021
It works great up to 2.2 GHz, then the gain starts to drop.
Modulo amplificatore di potenza RF a banda ultralarga da 5-6000MHZ con guadagno di 20dB e custodia
US$21.93 US$22.99
0
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hAKi 08/05/2020
Nice little display! Works well with excellent library U8g2lib.h and constructor U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE) and library U8x8lib.h with constructor U8X8_SSD1306_128X64_NONAME_HW_I2C u8x8(U8X8_PIN_NONE).
3Pcs Display OLED IIC I2C Blu Giallo da 0.96 Pollici
US$26.55 US$27.99
2
raccomandazioni
Commento (0)
hAKi 23/04/2020
Excellent amplifier! With 0,5 mW at input you get 2,6 W at output. Recommended!
Amplificatore di potenza RF a banda larga per trasmettitore HF VHF UHF FM da 1MHz-1000MHZ 35DB 3W per radioamatori
US$29.39 US$43.99
2
raccomandazioni
Commento (0)
Scheda di sviluppo STM32F401 STM32F401CCU6 Scheda di apprendimento STM32F4
US$6.99 US$16.99

D: Is it possible to program this black pill with Arduino IDE?

Domandata da hAKi il 2020-11-14 03:30:16

Bruce Ithink it CAN

2020-11-25 02:05:00 Utile (0)
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risposta (1)
hAKi 18/11/2020
Good idea, execution could be better. The output filter should be better, there is a lot of residual switching noise. There is no crossover distortion and frequency response are very good indeed. Pity for output filters… Measurements are done on pure resistive load and at RMS output power of 5W.
Amplificatore stereo TPA3116 di classe D con bluetooth 5.0 HIFI da 2x50W con supporto per USB, scheda TF, RCA, AUX e USB Stick
US$35.79 US$37.99
0
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hAKi 08/05/2020
As expected.
Modulo display LCD con retroilluminazione blu Geekcreit® IIC / I2C 1602 Geekcreit per Arduino - prodotti che funzionano con schede Arduino ufficiali
US$6.89 US$9.99
0
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Modulo generatore di segnale Geekcreit® Sorgente di segnale RF da 35M-4.4GHz Sintetizzatore di frequenza ADF4351 Scheda di sviluppo
US$36.79 US$47.99

D: Is it possible to drive/control Signal Generator by Arduino? Is there any appropriate library for that board?

Domandata da hAKi il 2020-02-25 02:40:30

Backcour Has Arduino controlled, but not suitable for this board

2020-03-04 12:15:27 Utile (0)
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risposta (1)
hAKi 02/10/2019
Was tested and it is OK!
Alimentatore regolabile AC/DC Excellway 4-24V 2.5A 60W con controllo di velocità e display di volt. Spina EU/US/AU/UK.
US$11.03 US$19.99
0
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hAKi 19/01/2018
It works (in opposite from the one ordered before) but screen was slanted and not centred to the PCB.
Geekcreit® 1.3 pollici 4Pin Bianco OLED LCD Display 12864 IIC I2C Interfaccia Modulo per Arduino
US$8.39 US$19.99
1
raccomandazioni
Commento (0)
hAKi 19/01/2018
Definitely I do not have luck with displays from Banggood. First, received display was not as it was described. It has only one row of pins - disturbing, if you already prepare a HW. Second, one of the received displays has stains in the screen. The last, but not the least, only one of received display works and unfortunately that with stains.
2pcs modulo LCD 84x48 retroilluminazione bianca per 5110 arduino UNO prototipo
US$7.35
0
raccomandazioni
Commento (1)
hAKi 19/01/2018
Comes well packed and works as expected.
Driver motore passo-passo Geekcreit® Stepstick DRV8825 per stampanti 3D Reprap con PCB a 4 strati
US$6.80 US$13.10
0
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Commento (0)
hAKi 19/01/2018
Very convenient for Arduino Nano. It has pins as classical Arduino UNO + a lot of additional pins for sensors together with GND and VCC. It has additional pins for comm and I2C also. Will buy more of them.
Scheda di espansione multifunzione Geekcreit 328P V3.0 per NANO UNO
US$3.99 US$9.99
0
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hAKi 19/01/2018
Good, comes with a lot of spare screws. I like this!
5mm Asse Ottico di Accoppiamento Flangia Supporta Connettore per Albero a Piastra Rigida con Sede Fissa in Acciaio
US$8.07 US$8.99
0
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hAKi 19/01/2018
Solid motor, recommended for all kind of DIY toys
Ruota in gomma + motore TT da 3V-6V DC per auto robot intelligente
US$8.07 US$8.99
0
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Commento (0)
hAKi 19/01/2018
Mini voltmeter is a nice and convenient product. They can be calibrated as well.
Geekcreit® Voltmetro digitale mini da 0,28 pollici 2,5V-30V Tester di tensione Voltmetro a due linee
US$7.24 US$8.99
0
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