Search results

Hi I want to connect to a smd cpu mounted on a pcb. Eventually a picaxe will be connected to the part on the pcb. I need to connect ten wires or some sort of connector to the ten pins in a block down the top left hand side of the cpu. The part is a QFP 112 pin item. I could solder micro...

Another maths question. I have an adc connected to a HV supply via a non linear isolation circuit. It produces the below 10bit ADC readings at the given input voltage. That works fine but i want to create a formula from these data points to allow the adc to produce the actual voltage. I don't...

I'm working on a project which reqs a quantity of the above displays. I'm probably looking at buying say ~50 to start with to see how it goes. Now I'm sure some on here must have some recommended suppliers in the far east. I'm just after a bog cheapo standard 20x4 HD44780 character lcd black on...

I'm working on some serial comms traffic and trying to work out how a value is being derived from some hex data. I'll give you an example, we have two data bytes $88 + $77 being transmitted in response to request for temperature data. From these two bytes it generates a temperature value of...

I'm after a commerical handheld logic probe with fine point for picaxe smd circuit testing. I would prefer one with some sort of built in serial analyser, is there such a thing? And an lcd screen to display the waveform/logic data. Any recommendations from the Picaxe collective please. :confused:

I'm thinking about my next project and going smd but with the pcb assembled for me. What services have people used for this. Any good links? :confused: I already use pcbcart for my pcb's, now i want to get the boards made up somewhere. The collective mind on here has always served us well...

I'm after a part recommendation from the collective mind on here. 8 bit DAC. 8 pin dil package 5v supply and rail to rail output. As much output current as i can get. I2C or some sort of picaxe compatible serial interface. Low cost. Any thoughts and or examples with code used to drive it...

I have a variable hex number in a Picaxe byte variable. In this example lets assume it is $14 How can I extract the value of the right hand digit i.e. 4 into another byte variable? Masking?

Any reccomendations for an ultra thin temp sensor compatible with the picaxe via I2C or simple ADC thermistor which needs to squeeze between some flat battery cells in a sandwich. I only need a range of about -10 to 100C max. Ultra small might do if ultra thin is not an option. Thanks Peter...

Can anyone help me with creating a VSM model for a MAX6956 28pin dil device, two of which Maxim very kindly sent me as samples. To say i'm a begginer with VSM is fair, could anyone give me a hand creating this chip? Does anyone already have a model for it? Thanks

I've a simple circuit with a picaxe 28x1 talking to a AT24C512B 512k bit 64k byte eeprom. I'm happy with the circuit and the setup command. But addressing the 64kbyte eeprom memory, is it as simple as incrementing the address pointer (0 in the below example) and reading/writing the data. Code...

I've ben using my BAS800 pic programmer over the last few days without problem on 16F88 (Ex Picaxe 18X) chip. This morning though with the same chip I used yesterday it says not found!! Tried another known good 18X chip and can't find that either. Software is working and communicating with...

Which is faster and by how much? I am assuming 5v devices not the 64mhz X2. Thanks Looking at a 28X1 at 20mhz but need 9600,8,E,1 any thoughts on initialising the 28X1 ASUART for 20mhz to work at 9600 baud. I have been using an 18X with the asuart code at 8mhz but it's just not quite fast...

This is a non picaxe query just looking for ideas. I have a 33R 25w power resistor across which a voltage of between 3-25v can develop. Current/power as per V/R but within 25W. In my application the voltage across the resistor starts off at say 25V faling slowly over several hours until is...

Looking at all the regular contributors on here, can you tell me who actually uses the flowcharts programming option in the editor? Is there ever likely to be an edition (smaller) of the editor without the flowchart stuff? Anyone any idea how big it would be without flowcharts? Just wondering ;)

I have read with interest Jeremy's 32 bit maths routine, but maths is not my strong point, and I can't understand what i need to do to utilise it. Basically my problem is this I have a state of charge indicator which goes from 0-100%. I am using the number 10,000 to represent the value 100...

This is a nice new & cheap IMO chip/pcb/system for serial to RCA video. Fully documented with source and hex code etc!! http://www.batsocks.co.uk/products/Other/TellyMate.htm I'm def going to try one. Anyone any idea if the Bas800 hardware programmer I bought from rev-ed would work with...

I've been working on a remote display option for my BMS which uses the simple 433mhz am transmitters and code described on this site. The BMS transmits serial data at 1200 baud to a remote display/alarm in the house. That part works very well :cool: I'm using an 08M at the rx end and this is...

This seems to be giving a strange error It played up in my Master software today so I deleted everything except a simple loop and the two directives. It worked fine last time I tried it. But now gives syntax error. #picaxe 28x1 #gosubs 255 for b0 = 1 to 100 next b0 Gives error Note...

A question about Pulsin. We know Pulsin watches a pin for a pulse and times it's length giving a value in units. Great it's a useful command. :D However if we issue a pulsin command a timer must be started somewhere, as it times out after a period if no pulse received. No problem with that...