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Julian Spina

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By Julian Spina
6 June 2022 0

Easy Programming ESP-12E using ESP-8266

How to program ESP-12E, simple board When choosing an MCU with WiFi support a good choice is a module from…

By Julian Spina
25 August 2022 0

Control Water Pump using ESP8266 ESP12E (DRAFT)

Goal: Safely control water pump from remote Requirements: Obtain a clean/stable output voltage; Address potential problems (relay contact soldering); Use…

By Julian Spina
22 March 2022 2

ATTiny/Arduino UNO AC current measurements with ACS712

Read AC current and transmit reading via 433MHz This is the AC version of the program I published last year…

By Julian Spina
29 December 2021 1

ACS712 Module problems – 30A version

Double check rating of power connector on ACS712-30A modules. May happen that connector is only rated for 10A, in which case it makes sense to remove the connector.

By Julian Spina
21 March 2021 8

Arduino DC current measurement problems

Reading current with ACS712 and a ±0.1A accuracy. The most common problems in using ACS712 chip are floating readings and correcting noise influence.

By Julian Spina
31 October 2020 0

PCB Etching overview with Inkjet and Photoresist Dry Film (Part 1)

DIY intro to etching without using a laser printer DIY PCB prototyping can be fun especially using recycled and cost…

By Julian Spina
8 September 2020 23

Simple DC Voltage and Current limiter

Protect circuits using LM317 What happened is this: I made my first low-cost photovoltaic system, a small 12V, 4 x…

By Julian Spina
3 August 2020 17

UEIUA CPY-2420 Review and possible problems

20A MPPT Regulator for solar systems CPY 2420 This is a cheap true MPPT regulator from UEIUA chinese producer, you…

By Julian Spina
31 May 2020 2

Impianto Fotovoltaico a basso costo [IT]

Descrizione progetto Fotovoltaico sìì! Come molti di noi trovo affascinante questo argomento e dopo tanto esitare mi sono deciso a…

If you're interested to Vintage Boards contact me or see the Vintage Section

Hot Sale ACS712 5A 20A 30A

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Latest Articles

  • Control Water Pump using ESP8266 ESP12E (DRAFT) 25 August 2022
  • Easy Programming ESP-12E using ESP-8266 6 June 2022
  • ATTiny/Arduino UNO AC current measurements with ACS712 22 March 2022
  • ACS712 Module problems – 30A version 29 December 2021
  • Arduino DC current measurement problems 21 March 2021

Comments

  • Julian Spina on UEIUA CPY-2420 Review and possible problems
  • ross on UEIUA CPY-2420 Review and possible problems
  • Tory Bance on Simple DC Voltage and Current limiter
  • Julian Spina on UEIUA CPY-2420 Review and possible problems
  • James on UEIUA CPY-2420 Review and possible problems

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