Recent content by JPU

Hi Alan Thanks for you help. We have had a look at trying to connect a Picaxe to a LCD we have here and it has an I2C port. So far we havent been able to get anything to display and I can not find much information relating to it all. What I have seen was a long list of code that was needed to...

Can someone please direct me as the Picaxe 40X2 DIL labelling in Picaxe manual 1 does not match the the 40X2 QFN pic available on Picaxe store which appears to have 44pins in total although we believe some are not connected? Basically is there a reference available for the labelling of the...

Thank you both for you help with this. I am waiting for the midas LCDs to arrive and will Attempt to connect the pic and the boards. Please can someone let me know what the purpose of an "EXPANDER FOR I2C BUS" is? I have seen it mentioned many times when reading about connecting some pics...

Hi All Is it possible to use a 14M2 to control output to a LCD screen with I2C interface. This is the LCD being considered If so, please can you direct me to any resources that may be available so I can understand the easiest way to get some basic alpha numeric text output to the LCD from a...

Thanks for looking, I am trying to use the signal output from as brush-less motor controller to detect if the power to a motor should be stopped. The brush-less controller is from Ebay and makes use of the HAL sensors on the motor. The controller works well but has a method to cap the current...

Hi All Here is a pic of the front and back of the PCB. Any help? JPU

Hi all. Thanks for your help. I initially had the idea after buying a cheap led bike light of eBay. The Pcb Is so simple and has a pic, a mosfet, a micro switch, a few small caps and a few resistors. The light worked perfectly and worked well. I stripped the pcb out and utilised it for a...

Hi All I have read a few articles about using a PIC to limit the current to an LED by measuring the voltage drop across an LED using the ADC input pin. The current to the LED is controlled using the pwm command. The PWM output to the LED is adjusted to control the length of time the LED is...

Thank hippy that helped me alot.

Hi, thank you looking. Im struggling with what should be simple but I cant get my head around it and I am just going around in circles. Its even harder as we cant deal in fractions! I have an ADC input that ranges from 340 - 1000 Id like to take the input and use it to set the speed of a...

Thanks everyone, Yes I think Hippys idea would be easiest for me to put into practice. I thought it was worth a post just in case there was a magic solution but it looks like not in this case. Thanks again for your help.

Hi All I have set up a 14m2 to drive a brushless motor controller. The 14m2 is connected to a foot pedal (variable resistor (10K)). I have set the 14m2 to read the ADC in via a voltage divider. The voltage divider is 10K resistor and then the 10K foot pedal. When connected to the pedal the...

Hi All They are LIFEPO4 cells 8S2P 18650. The pack is nominal voltage 25.6V3AH The machine is basically a brush less motor and controller. The pack originally had the Capacitor added to the output wires within the case, However over time and testing the battery has become removed fromthe...

Hi All Not directly related to a Picaxe but I am hoping someone can help. I have a battery (29.2v DC) and its made up of Lithium cells. Inside the battery there is a capacitor across the positive and negative wires which then lead directly out of the battery. The capacitor is a 35V 220uf...

Hi I am trying to store a binary value o or 1 into a permanent location which remains when the chip is switched off. However no matter what I do the code always defaults to displaying a value which represents a zero value being read from the eprom. So if I try to write 1 to location 1 eg write...