# Force Sensor + DC motor **URL:** \ **Category:** Uncategorized\ **Created:** [November 23, 2019, 8:37pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899 "2019-11-23T20:37:24Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![nadine-mahfoud](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@nadine-mahfoud](https://forum.xod.io/u/nadine-mahfoud)\ **Post date:** [November 23, 2019, 8:37pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/1 "2019-11-23T20:37:24Z")
hello everyone, I’m a beginner with XOD and I have a project where I want to control the speed with DC motor or brushless motor with a Force sensor so as much power I apply on the sensor as much speed I get from the motor. However, I am finding difficulties in writing the program in XOD. Please, can anyone help? Thank you so much ---
**Author:** ![gweimer](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@gweimer](https://forum.xod.io/u/gweimer)\ **Post date:** [November 24, 2019, 1:04am UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/2 "2019-11-24T01:04:41Z")
I assume your force sensor is read using analog-read & motor speed is controlled using PWM through an H-bridge. Since output of analog-read is 0-1 and input for PWM 0-1, you can simply connect the two together. There are several analog nodes you might use for reading the input & at least one h-bridge node for controlling the motor. ---
**Author:** ![robertspark](https://avatars.discourse-cdn.com/v4/letter/r/839c29/32.png) [@robertspark](https://forum.xod.io/u/robertspark)\ **Post date:** [November 24, 2019, 2:26pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/3 "2019-11-24T14:26:54Z")
Maybe if you post your attempt then someone could advise You may consider using the “map” node to hone in your sensor values to output signal ---
**Author:** ![nadine-mahfoud](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@nadine-mahfoud](https://forum.xod.io/u/nadine-mahfoud)\ **Post date:** [November 24, 2019, 8:17pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/4 "2019-11-24T20:17:59Z")
Thank you very much for your reply here I uploaded 2 photos one for the code I’m using in XOD and in another comment I’ll upload a photo of the circuit - cuz I’m not allowed to post 2 photos - I’m following but instead of the button I need to put Force Sensor ![xod%20](https://canada1.discourse-cdn.com/flex027/uploads/xod/original/2X/5/5cf71839122e84f498cf3375d40412a93e64adf2.jpeg) ---
**Author:** ![nadine-mahfoud](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@nadine-mahfoud](https://forum.xod.io/u/nadine-mahfoud)\ **Post date:** [November 24, 2019, 8:18pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/5 "2019-11-24T20:18:37Z")
![xod-1%20](https://canada1.discourse-cdn.com/flex027/uploads/xod/original/2X/5/58e43a23a3a0afffbf68833b9b088a7af197100f.jpeg) here is the photo of the circuit ---
**Author:** ![gweimer](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@gweimer](https://forum.xod.io/u/gweimer)\ **Post date:** [November 25, 2019, 1:40am UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/6 "2019-11-25T01:40:47Z")
It is not clear what everything is in your wiring diagram, so I’m not certain what you are doing. Are you using a mechanical relay for motor control? That is not going to be able to switch on & off fast enough to control speed. If the transistor is your “relay”, then it might work, but you want to use PWM output pin to control the transistor on/off for speed control. The h-bridge node is assuming you have an h-bridge controller for the motor. The DR & PWM pins on the h-bridge need to be set to the pin numbers you’ve wired the h-bridge to. If you are just using a relay or transistor for motor control, then you don’t really need the h-bridge node. The output for analog-read is between 0 & 1, so there is no need for the max node, and the less node comparing it to 500 will always be true. ---
**Author:** ![robertspark](https://avatars.discourse-cdn.com/v4/letter/r/839c29/32.png) [@robertspark](https://forum.xod.io/u/robertspark)\ **Post date:** [November 25, 2019, 3:23pm UTC](https://forum.xod.io/t/force-sensor-dc-motor/2899/7 "2019-11-25T15:23:42Z")
On the H-bridge-dc-motor node, you probably want to set the PWM port different to the DIR (direction) signal output